00330nam a2200121Ia 4500008004100000022001400041040001100055100001900066245002000085260007700105300001700182300000900199251112s9999||||xx |||||||||||||| ||und||  a0094-2405  aCNCLSA  aColin G. Orton 0aMedical Physics  cOctober, 2002bThe American Association of Physicists in MedicineaU.S.A  aP. 2205-3011  bV.57